Best ND Filters for DJI Osmo Action 6
The DJI Osmo Action 6 is a 1/1.1-inch square CMOS, ISO 100 as the floor, and a variable aperture that only walks f/2.0 to f/4.0 — two stops. 4K/120 and 8K/30 still raise shutter until motion looks like a slideshow. Official ND exists: snap-on over the Glass Lens Cover, Corning Gorilla Glass, ND8 / ND16 / ND32. DJI: it does not affect the 20 m waterproofing. There is no official ND64. The 2026 kit that matches this body is the Osmo Action 6 ND Filter Set. It is not the Action 3/4/5 Pro ring, and it is not a variable ND.
Our Top Picks at a Glance
Updated September 2026 · Osmo Action 6 · 1/1.1″ · f/2.0–f/4.0 · 8K30 · 4K120 · 120 Mbps · 50 GB internal · official ND8/16/32 · snap-on keeps 20 m
CP.OS.00000525.02. ND8 / 16 / 32. Snap-on over the cover. Gorilla Glass. Waterproof stays.
Check Price at Amazon Read full review ↓FW-OA6-STD. ND8 / 16 / 32 / 64. The 6-stop official skipped. Action 6 only.
Check Price at Amazon Read full review ↓SKU.2753. ND8 / 16 / 32 / 64 snap-on. Not the screw-in that unthreads the cover.
Check Price at Amazon Read full review ↓Disclosure: This page contains affiliate links. As an Amazon Associate affiliate, we earn a small commission from qualifying purchases at no extra cost to you.
Comparison Table
| Product | Stops in the box | On an Action 6 | Mount / water | Price | Buy |
|---|---|---|---|---|---|
| DJI Action 6 ND Set | ND8 / 16 / 32 | Official daylight line | Snap-on · Gorilla · 20 m stays | ~$40–$80 / €59 / £49 | Check |
| Freewell Action 6 ND | ND8 / 16 / 32 / 64 | Official + one stop | FW-OA6-STD · Action 6 only | ~$50 | Check |
| K&F Snap-On 4-Pack | ND8 / 16 / 32 / 64 | Budget four-stop ladder | SKU.2753 · not screw-in | ~$40 | Check |
| PolarPro Shutter | ND8 / 16 / 32 | CinemaSeries — Layer 2 | Action 6 only · housing claim | ~$80 | Check |
| DJI Action 3/4/5 Pro ND | ND8 / 16 / 32 | Wrong barrel — skip | 61 g · 87.78 mm case | ~$79 | Check |
Street prices move. DJI’s own regional stores have listed the Action 6 set around €59 / £49 / USD $39; some US carts sit higher. ND8 is 3 stops, ND16 is 4, ND32 is 5, ND64 is 6. 180-degree shutter is ≈ 2× fps: ~1/60 at 4K/30, ~1/120 at 4K/60, ~1/240 at 4K/120. f/2.0 to f/4.0 is only two stops — it is not an ND32. Official glass stops at ND32; listings that reprint CP.OS.00000525 as ND16/32/64 are copying the wrong box. 50 GB of usable internal storage will hold a clip without a card; 120 Mbps still wants a V30 stick for a long day. Do not unthread the Glass Lens Cover to “mount” a filter unless that kit is sold as a replacement cover — that ring is the 20 m seal.
How We Picked These Filters
- What DJI published for this body: Osmo Action 6 spec sheet: 1/1.1-inch square CMOS, 2.4 μm fused pixels, up to 13.5 stops of dynamic range. Lens 155° FOV, aperture f/2.0–f/4.0 (focus 0.2 m–∞ at f/4.0). Weight 149 g. Body 72.8 × 47.2 × 33.1 mm. Dual OLED (1.46″ front / 2.5″ rear). IP68, 20 m bare; Waterproof Case to 60 m — close the battery and USB-C covers and tighten the Glass Lens Cover first. 64 GB built-in (50 GB usable) plus microSD to 1 TB (UHS-I U3 A2 V30 recommended). Battery 1950 mAh / 7.5 Wh; lab 240 min at 1080p/24. Video: 8K 7680×4320 at 24/25/30 (16:9 only; RockSteady / RockSteady+; max ISO 12800 / 6400 D-Log M), 4K Custom 3840×3840 to 60, 4K 4:3 and 16:9 to 120, 1080p to 240. Max bitrate 120 Mbps. HEVC MP4. D-Log M 10-bit. ISO photo 100–25600; video 100–25600 (51200 SuperNight only). Shutter photo 1/8000–30 s; video 1/8000 to the fps limit. Official ND: Osmo Action 6 ND Filter Set, manufacturer ID CP.OS.00000525.02, EAN 6937224127777. Box: ND8, ND16, ND32, case. Snap-on; no lens-cover removal; waterproofing unchanged. Filter + cover: Corning Gorilla Glass, AF coat. Case spec DJI prints: 143.5 × 52.2 × 11.2 mm, 19 g. Compatibility line is Action 6 only.
- Why f/4.0 still needs glass: Two aperture stops will not hold 180-degree shutter in noon sun at ISO 100. 4K/60 wants ~1/120; 4K/120 wants ~1/240; 8K/30 wants ~1/60. Action cameras also run EIS (RockSteady 3.0 / HorizonSteady to 4K/60) — some shooters sit a click faster than 180-degree so the crop has edges to track. That is still ND territory, not “open to f/4.0 and hope.” D-Log M will show a cheap magenta/green cast. 50 GB inside the body does not replace ND. A variable ND is two polarizers on a 149 g helmet cam, not the official waterproof snap-on.
- The cover, the case, and the SKU traps: DJI usage notes: the camera is not waterproof without a tightened Glass Lens Cover and a seated rubber ring. Official ND presses on over that cover. Screw-in third-party kits (K&F SKU.2713 and cousins) replace the cover — treat 20 m as gone. Snap-on K&F is SKU.2753. Freewell FW-OA6-STD is Action 6; FW-OA5-STD is the 3/4/5 Pro barrel. PolarPro’s Action 6 Shutter / VND pages say they do not fit Action 5. The older official “Osmo Action ND Filter Set” is Action 3/4/5 Pro: 61 g, 87.78 × 81.79 × 10.19 mm. Pull ND before the 60 m Waterproof Case unless that brand prints a housing fit (PolarPro claims yes). Do not use the body in hot springs. Macro / FOV Boost lenses are separate optics — do not assume an ND snaps over them.
Best ND Filters for DJI Osmo Action 6: Detailed Reviews
DJI Osmo Action 6 ND Filter Set (ND8 / 16 / 32) View on Amazon View on B&H
| SKU | CP.OS.00000525.02 · EAN 6937224127777. Box: ND8, ND16, ND32, Osmo Action 6 ND Filter Case. Compatibility printed: Action 6 only. |
|---|---|
| Mount | Snap-on over the Glass Lens Cover. DJI: no cover removal; overall waterproofing unchanged. Filter + cover share Corning Gorilla Glass with AF coating. |
| Case DJI prints | 143.5 × 52.2 × 11.2 mm · 19 g (the box, not each ring). |
| Missing | ND64. DJI stopped at 5 stops on this camera. |
| SKU trap | Retail pages that reprint this SKU as ND16/32/64. The Action 3/4/5 Pro “Osmo Action ND Filter Set.” |
Why it fits the Action 6. This is the first Osmo Action with a moving iris, and DJI still shipped a three-density snap-on because f/4.0 is not enough. Official glass is the pairing that keeps the 20 m / IP68 path: cover stays on, filter presses on, AF coat on both surfaces. Buy this set if the week is mixed 4K/60 and the camera still sees a pool. Buy Freewell or K&F first if snow/beach is the job and you need six stops. 50 GB inside the camera is for a cardless start, not for skipping V30 on a 120 Mbps day.
Skip this if you already know you need ND64 every noon — Freewell. Skip a $79 third-party 3-pack that is the same densities without the waterproof line.
- DJI: snap-on, cover stays, 20 m unchanged
- Gorilla Glass + AF on filter and cover
- ND8 / 16 / 32 match 4K/30–4K/120 daylight
- No official ND64
- Regional street price swings ($39 vs €59 vs higher US carts)
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
Freewell Osmo Action 6 ND Filters 4-Pack View on Amazon View on B&H
| SKU | Freewell DJI Osmo Action 6 ND Filters 4Pack FW-OA6-STD. Box: ND8, ND16, ND32, ND64, case, cloth. Street ~$50. |
|---|---|
| On Action 6 | Same 180-degree math as official, plus six stops. Confirm the box says Action 6, not FW-OA5-STD (3/4/5 Pro). |
| Water | Freewell does not reprint DJI’s “waterproofing unchanged” line. Snap it over the cover; do not unthread the Gorilla lid. Pull it before the 60 m case. |
| SKU trap | FW-OA6-BRG (ND/PL Bright Day). FW-OA6-VND (1–5 stop variable). Mega 12-pack. Macro-lens ND 4-pack — that is for Freewell’s macro, not the stock cover. |
Why it is Value, not Overall. Official ND32 is five stops. f/4.0 plus ND32 is still short on a white beach at 4K/30 / 1/60. Freewell’s fourth filter is the reason this box exists. You give up printed Gorilla / AF / “20 m unchanged.” Coatings are why D-Log M may still prefer the DJI set when both are on a shelf and you never need ND64. Do not buy Freewell’s 12-pack and call it this page’s Value pick.
Skip this if official ND32 covers the week and the camera still goes in the sea — DJI. Skip every Freewell box that prints Action 5 Pro.
- ND64 in an Action 6 kit
- Four useful daylight stops for ~$50
- No DJI waterproof sentence on the product page
- Easy to grab the 5 Pro / Mega / VND sibling
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
K&F Concept Action 6 Snap-On ND 4-Pack View on Amazon View on B&H
| SKU | K&F CONCEPT Snap On ND Filter Kit SKU.2753. Box: ND8, ND16, ND32, ND64. Street ~$40. Sibling screw-in: SKU.2713 — different mount. |
|---|---|
| On Action 6 | Same ladder as Freewell. Confirm “snap-on” / “snap on” in the title. Screw-in replaces the cover and takes the 20 m rating with it. |
| SKU trap | SKU.2709 (CPL+ND8/16/32 screw-in). SKU.2714 (6-pack with black mist). SKU.2076V1 (Action 3/4/5 Pro). TELESIN S5-FLT-40 is a fine Action 6 push-on 8/16/32+CPL — not this Budget row if the cart says 3/4/5 Pro (S5-FLT-06-TDJ). |
Why it is Budget. Four densities, Action 6 snap-on, one cheap invoice. You give up Gorilla branding and Freewell’s name on the case. The only way this pick fails is buying the screw-in twin because Amazon merged the titles. If the week is 20 m swims and three official stops, spend the extra on DJI.
Skip this if the listing is screw-in or Action 5 Pro. Skip a no-name 2-pack with no densities printed.
- ND8–64 without a $50 Freewell tag
- Snap-on SKU is named — 2753
- Amazon will also show the screw-in SKU.2713
- Not the official waterproof sentence
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
If You Need Something Else
These two are not cheaper versions of the Top 3. One is CinemaSeries glass that PolarPro says fits DJI’s housing. One is last year’s official set Amazon will try to sell you.
PolarPro Action 6 Shutter Collection View on Amazon View on B&H
| What it is | PolarPro Shutter Collection for Osmo Action 6. ND8, ND16, ND32, hard case, cloth. CinemaSeries glass, 16 coatings. Street ~$80. Action 6 only — PolarPro FAQ: will not fit Action 5. |
|---|---|
| When it wins | You want German CinemaSeries glass and PolarPro’s printed “fits the DJI Protective Housing” line. Same three densities as official, not more. |
| VND sibling | PolarPro 3–5 stop VND and Freewell FW-OA6-VND (~$50) stay off the Top 3. Two polarizers, not a waterproof-rated snap-on. |
Buy this after you already know official ND32 is enough and you want the housing fit in writing. Do not buy it as a substitute for ND64.
Skip this if you need six stops or the official waterproof sentence — DJI or Freewell.
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
DJI Osmo Action ND Filter Set (Action 3 / 4 / 5 Pro) View on Amazon View on B&H
| Why it shows up | Amazon still says “Osmo Action ND.” Official 3/4/5 Pro kit is ND8/16/32, press-on, Gorilla, 61 g, 87.78 × 81.79 × 10.19 mm. Compatibility printed: Action 5 Pro, Action 4, Action 3 — not Action 6. |
|---|---|
| On Action 6 | Wrong barrel. Action 6 official is a new seat (19 g case drawing, CP.OS.00000525.02). Same skip: Freewell FW-OA5-STD, K&F SKU.2076V1, TELESIN S5-FLT-06-TDJ, PolarPro Action 5 glass. |
Action 6 is a new cover diameter, not a firmware unlock for last year’s ring. If the camera in the bag is an Action 6, the cart says CP.OS.00000525, FW-OA6-STD, or SKU.2753.
Skip this if the body is an Action 6. Buy official Action 6 ND, Freewell Action 6-cut or K&F snap-on.
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
Frequently Asked Questions
What ND strength the Action 6 needs
f/2.0–f/4.0 is two stops. ISO 100 is the floor. 180-degree shutter is ≈ 2× fps: about 1/60 at 4K/30 or 8K/30, 1/120 at 4K/60, 1/240 at 4K/120. Official glass is ND8 (3 stops), ND16 (4), ND32 (5). There is no official ND64. Start at ND32 in hard sun or snow. Drop to ND16 or ND8 if the frame goes dark or ISO climbs. If 4K/30 is still hot on ND32 at f/4.0, that is Freewell / K&F ND64 — do not stack.
Variable aperture instead of an ND
No. Closing to f/4.0 is two stops. ND32 is five. You can lock a mid aperture (some riders sit around f/2.6) for a consistent look and let ND handle the rest. PRO mode is where shutter and ISO become manual. HorizonSteady / RockSteady still want clean edges — that is a reason some people sit a click faster than 180-degree, not a reason to skip ND.
Action 5 Pro or Action 4 filters on an Action 6
No. Action 6 official is CP.OS.00000525.02. The older official set is Action 3/4/5 Pro only (61 g, 87.78 mm case). PolarPro’s Action 6 FAQ: will not fit Action 5. Freewell FW-OA5-STD and TELESIN’s 3/4/5 Pro kit (S5-FLT-06-TDJ) are the other barrel. Buy FW-OA6-STD or SKU.2753 if you are not buying DJI.
The 50 GB inside the camera and ND
Action 6 has 64 GB flash / 50 GB usable, so a clip can start without a microSD. That does not change f/2.0 or 4K/120. 120 Mbps still wants a UHS-I V30 card for a long roll. ND is for shutter, not for the buffer.
ND in water or in the 60 m case
Action 6 is rated 20 m / 66 ft without a case if the Glass Lens Cover is tight and the port doors are closed; Waterproof Case to 60 m. Official ND notes: snap-on, cover stays, overall waterproofing unchanged — that is the bare-camera 20 m path, not a license for hot springs. Pull third-party ND before the 60 m case unless the brand prints a housing fit (PolarPro Shutter says yes). Screw-in filters that replace the cover take the 20 m rating with them. After a swim, dry the body before you unthread the cover so vapor does not fog the inside.
Final Verdict
For most DJI Osmo Action 6 kits, buy official CP.OS.00000525.02 glass, leave the Glass Lens Cover on, snap ND32 for hard sun (ND16 at 4K/60, ND8 in shade), and keep the 20 m rating. f/2.0–f/4.0 is two stops, not an ND. ISO 100 is the floor. There is no official ND64. Snow/beach and 4K/30 still hot? Freewell FW-OA6-STD. Same four densities cheaper, snap-on only? K&F SKU.2753. Skip the Action 3/4/5 Pro set, skip screw-in covers, skip VND as the first filter. 50 GB inside the camera is not an ND. This page is the Action 6, not the 5 Pro.